JPH0519871Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention relates to a loading device for loading a cassette of a recording medium into a predetermined position in a recording and reproducing device. The present invention relates to a device suitable for use in a device that is physically moved.

〓Summary of the invention〓 This invention has the following features in the cassette insertion mode:
After the cassette is inserted into the cassette holder, the cassette is held, and then the cassette and cassette holder start moving, and in eject mode, the cassette hold is released for the cassette holder that has been moved to the return position. This allows the cassette to be removed later.

<Prior Art> In order to load a tape cassette containing a magnetic tape into a predetermined operating position, a cassette loading device has conventionally been provided in a recording/reproducing apparatus such as a VTR. The cassette holder provided in the cassette loading device is a box-shaped structure that receives the cassette, and is adapted to be moved along, for example, an L-shaped groove formed in the frame. The tape cassette is loaded. A cassette holder is provided at the top of the cassette holder, and when the cassette is inserted into the holder, the cassette and holder become one piece.
It is arranged to move to a predetermined position inside a recording/reproducing device such as a VTR.

Problems to be Solved by the Invention In conventional cassette loading devices, the cassette presser is always biased in the direction of pressing the cassette. Therefore, when a cassette is inserted into a cassette holder, the cassette is held by the frictional force between the bottom surface of the cassette and the bottom surface of the cassette holder.
According to this structure, since a pressing force is applied to the cassette even when the cassette is inserted, a constant insertion force is required. If the insertion force is weakened to improve the insertion feeling, the cassette retaining function is lost. Furthermore, since the pressing force of the cassette is applied even when the cassette is inserted, there is a drawback that the bottom surface of the cassette is worn out.

In view of these drawbacks, for example, JP-A-57-
Publication No. 127954 discloses that a lever is provided on the cassette holder, a cassette holding member is attached to this lever, and the pressing and releasing of the cassette is controlled in conjunction with the movement of the cassette holder using a pin on the fixed side. ing. According to this structure, the cassette cannot be held unless the cassette holder moves. Therefore, if the cassette holder is moved quickly, there is a problem that cassettes may be left behind.

The present invention was devised in view of these problems, and is designed so that no pressing force is applied to the cassette when the cassette is inserted, and the cassette is not left behind even if the cassette holder is moved quickly. It is an object of the present invention to provide a cassette loading device which is free from cassette loading.

<Means for Solving the Problems> The present invention comprises: a cassette holding member that holds a cassette; a cassette pressing member that is rotatably attached to the cassette holding member and presses the cassette against the cassette holding member; , a moving means connected to the cassette holding member through an engaging portion of the cassette holding member, and moving the cassette holding member via the cassette holding member to load the cassette onto the reel stand; When the moving means moves a predetermined amount while the cassette holding member remains stationary, the cassette holding member presses the cassette against the cassette holding member, and then the moving means further moves. The present invention relates to a cassette loading device characterized in that the cassette holding member is moved via a cassette holding member.

(Operation) When the moving means is moved, its initial movement causes the holding member to press the cassette against the cassette holding member. Then, by further moving the moving means after holding down the cassette,
The cassette holding member is moved via the cassette holding member, so that the cassette held by the cassette holding member is loaded onto the reel stand.

Embodiment FIG. 1 shows a VTR cassette loading device according to an embodiment of the present invention. This loading device includes a pair of left and right frames 10 located on both sides of the cassette holder in the moving direction. There is. There are three L-shaped grooves 11, 12, 13 on the left and right frames 10.
is formed, and a drive arm 14 is formed on the outside thereof.
are arranged. The drive arm 14 is urged to rotate clockwise relative to the gear 15 by a compression coil spring 44 and is rotatably supported by a support shaft 16 . Further, a dogleg-shaped groove 17 is formed in the drive arm 14, and a pinion 18 meshes with the drive gear 15. The pinion 18 is fixed to the end of a synchronizing shaft 19 that connects the left and right drive sections.

Protrusions 21 and 22 are integrally connected to the outer circumferential surface of the drive gear 15 attached to the outer surface of the frame 10 in a portion where no teeth are formed. Corresponding to these protrusions 21 and 22, a rising position detection sensor 2 is mounted on the frame 10.
3 and a lowering position detection sensor 24 are provided. These sensors 23, 24 cooperate with the projections 21, 22, respectively, to detect movement of the cassette holder into the raised and lowered positions.

As shown in FIGS. 4 and 5, the cassette holder 30 disposed between the left and right frames 10 has a structure in which left and right side plates 31 are connected by a bottom plate 32. Pins 33 and 34 are provided on the outer surface of the side plate 31.
are planted therein, and rollers 35 and 36 are attached to these pins 33 and 34, respectively.
and pins 33, 34 with rollers 35, 36
As shown in FIG. 1, the L-shaped grooves 11, 1
3, respectively.

A cassette holding lever 37 is disposed on the outside of the side plate 31 of the cassette holder 30, and is rotatably supported by the side plate 31 via a support shaft 38. The tip of the lever 37 is connected by a connecting plate 39, and is further provided with a pair of rubber cushions 40. A cushion 40 is adapted to press against the tape cassette. Further, a pin 41 is implanted on the outer side of the presser lever 37, and a roller 42 is attached to this pin 41. Note that the pin 41 provided with the roller 42 is connected to the L of the frame 10.
It is engaged in the dog-shaped groove 12 and also in the dogleg-shaped groove 17 of the drive arm 14 . In addition, the lever 37 is connected to the coil spring 4 that is locked to the side plate 31.
3, it is urged to rotate counterclockwise about the support shaft 38 in FIG.

A pair of left and right ejector levers 50 are attached to the bottom plate 32 of the cassette holder 30, and are rotatably supported by a support shaft 51. These levers 50 are rotatably biased by coil springs 52 and are provided with a shutter plate 53.
This shutter plate 53 is detected by a cassette insertion detection switch 54.

In the above configuration, the cassette holder 30 shown in FIG. 1 is in a standby state, and the rubber cushion 40 that presses the tape cassette 60 escapes to the top of the top plate 45 of the cassette holder 30. In this state, when the tape cassette 60 is inserted, the holding mechanism supported by the cassette holding lever 37 does not apply any restraining force to the cassette 60.

When the tape cassette 60 is inserted into the cassette holder 30 in such a position, the pin 55 of the ejector lever 50 shown in FIG. It is rotated. Then this lever 50
The position of the shutter plate 53 provided in the cassette insertion detection switch 54 changes.
detects insertion of the cassette 60, and in conjunction with this detection, power is turned on to a drive motor (not shown). After this, the tape cassette 60 is further inserted and comes into contact with a stopper 46, which is a folded portion of the bottom plate 32 of the cassette holder 30, and stops.

When the drive motor starts rotating, this rotation is transmitted to the drive gear 15 via the pinion 18, and the drive gear 15 is rotated. Then gear 15
The arm 14 attached to is also rotated about the support shaft 16. During the initial rotation of the drive arm 14, the groove 17 of this arm 14 is connected to the roller 4.
In order to push the pin 41 through the cassette lever 37, the cassette presser lever 37 is rotated. As a result, the rubber cushion 40 supported by the pressing plate 39 attached to the tip of this lever 37 presses the top surface of the tape cassette 60 as shown in FIG. It will not be possible to rotate further. During this period, the rotation of the drive arm 14 is applied to the rotation of the cassette holding lever 37, so the cassette holder 30 does not move during this period and remains in the return position.

When the drive motor rotates further, the rotational force of the arm 14 is transmitted to the cassette holder 30 via the cassette presser lever 37, since relative movement between the cassette presser lever 37 and the cassette holder 30 is impossible. The cassette holder 30 will move to the right in FIG. At this time, the large frictional force of the rubber cushion 40 ensures that the tape cassette 60 is pressed and held against the bottom plate 32 of the cassette holder 30.

When the drive motor further rotates, the arm 14 is rotated significantly clockwise about the support shaft 16 as shown in FIG. 3, and the cassette holder 30 is loaded while being guided by the L-shaped grooves 11, 12, and 13. moved to position. When the loading position is reached, the protrusion 22 provided on the outer periphery of the drive gear 15 including the drive arm 14 blocks the optical axis of the lowering position detection sensor 24, and the lowering position detection sensor 24 detects the lowering of the cassette holder 30. do. Note that in reality, the drive motor overruns and the drive arm 14 further rotates by a slight angle, causing the drive arm 14 and drive gear 1 to rotate.
5 is compressed, and the elastic restoring force of this spring elastically presses the tape cassette 60 to the loading position.

Next, to eject the tape cassette 60, an eject button (not shown) is pressed. Then, the tape is unloaded, and the drive motor is reversed in response to a signal accompanying the detection of the completion of unloading, and the drive arm 14 changes from the state shown in FIG. 3 to the state shown in FIG. will be moved.
When the drive arm 14 is rotated to the position shown in FIG.
Since the rollers 35 and 36 of No. 4 come into contact with the ends of the L-shaped grooves 11 and 13, the cassette holder 30 cannot move any further, and the cassette holder 30 stops at this position.

When the drive motor is further rotated, the drive arm 14 rotates the cassette holding lever 37 with respect to the cassette holder 30 about the support shaft 38 against the spring 43, thereby causing the rubber cushion 40 to rotate. It rises and leaves the cassette 60 as shown in FIG. In this way, cassette 6
0 is released from the cassette holder 30.
An eject lever 50 shown in FIG. 4 is rotated by a coil spring 52. In this manner, the tape cassette 60 is pushed to the left in FIG. 1 by the elastic restoring force of the coil spring 52. When the drive arm 14 is rotated to the position shown in FIG. 1, the raised position detection sensor 23 detects the protrusion 21, and this signal stops the rotation of the drive motor.

As described above, according to the cassette loading device according to the present embodiment, while the cassette 60 is being inserted into and removed from the cassette holder 30, the cassette 60 is not held against the cassette holder 30, and the insertion of the cassette 60 is not completed. The structure is such that it is maintained after Therefore, when the cassette 60 is inserted into and removed from the holder 30, no force is applied from the top surface of the cassette 60, making insertion and removal easier. Furthermore, since no force is applied to the top surface of the cassette 60 when inserting and removing the cassette 60, the bottom surface of the cassette 60 will not wear out against the bottom plate of the holder 30.

Furthermore, according to such a cassette loading device,
Presser lever 3 only when moving cassette holder 30.
Since the tape cassette 60 is held by the holding mechanism consisting of the tape cassette 7 and the rubber cushion 40, the holding force of the tape cassette 60 can be set to be relatively large, and the drive motor's power is reduced when attaching and detaching the cassette 60 at high speed. There is no need to control the angular acceleration of startup to a certain value or less. Further, the spring 43 holding the cassette 60 can be used as a limiter for absorbing overrun of the motor after reaching the raised position at the time of ejection.

Effects of the invention As described above, the present invention allows the moving means to move a predetermined amount while the cassette holding member remains stationary, so that after the cassette holding member presses the cassette against the cassette holding member, the moving means moves. By further moving the cassette holding member, the cassette holding member is moved via the cassette holding member.

Therefore, with this configuration, the cassette is not held down by the cassette pressing member when the cassette is inserted into and taken out from the cassette holding member, and the cassette is not held down when the cassette is inserted into and taken out from the cassette holding member. No more wear and tear.

Moreover, when the moving means is further moved after the cassette is pressed against the cassette holding member by the cassette holding member, the cassette holding member is moved via the cassette holding member. This ensures that the cassette is correctly loaded in the predetermined position.

Such a cassette loading operation is performed by moving the cassette holding member using a moving means via the cassette holding member, and by performing this operation at high speed, the cassette holding member The pressing force of the cassette increases. Therefore, it is possible to reliably prevent cassettes from being left behind at the insertion position of the cassette holding member, which occurs during high-speed cassette loading operations, and to ensure highly reliable cassette loading. It becomes possible to provide the device.

[Brief explanation of the drawing]

Fig. 1 is a side view of the main parts of a cassette loading device according to an embodiment of the present invention, Fig. 2 is a side view of the main parts with the cassette being held down, and Fig. 3 is a side view of the main parts with the cassette loaded. 4 is a plan view of the cassette holder, and FIG. 5 is a side view of the same. In addition, in the symbols used in the drawings, 10... frame, 11, 12, 13... L-shaped groove, 14
... Drive arm, 15 ... Drive gear, 30 ... Cassette holder, 37 ... Cassette presser lever, 3
9... Connection plate, 40... Rubber cushion, 41...
. . . pin, 42 . . . roller, 60 . . . tape cassette.

Claims (1)

[Claims for Utility Model Registration] A cassette holding member that holds a cassette; a cassette holding member that is rotatably attached to the cassette holding member and presses the cassette against the cassette holding member; and a cassette holding member that holds the cassette. a moving means connected to the cassette holding member via an engaging portion and for moving the cassette holding member via the cassette holding member to load the cassette onto the reel stand, the cassette holding member being stationary. When the moving means moves a predetermined amount while the cassette holding member holds the cassette against the cassette holding member, the moving means further moves to press the cassette through the cassette holding member. A cassette loading device characterized in that the cassette holding member is movable.